The human heart weighs how many pounds

Answers

Answer 1

After careful consideration your answer is...

Just about 1 pound

*Hope I helped*

~Alanna~

Answer 2

1 lb (pound)

Explanation:

it is the answer.


Related Questions

is an example of the degeneracy of the genetic code.

A.An amino acid has more than one codon.

B.Each codon specifies more than one amino acid

C.The first two bases in the CCA terminus of tRNA specify an amino acid.

D.The genetic code in mRNA is a triplet of bases.

Answers

Answer: a:an amino acid has more than one codon
Explanation: in a sequence of dna one codon is a triplet of based and when you look at the codon in an amino acid each one should consist of either one codon or one set of triplet bases.

which one of the following favourite the fastest transpiration rate​

Answers

Answer:

which one of the following favourite the fastest transpiration

Answer:

where are the options hmm

by the way the answer is Hot temperature, dry and windy environment causes fastest transpiration rate.

Explain why the biomass of secondary consumers is always lower than the biomass of primary consumers. ​

Answers

Answer:

Because energy is lost in the transfer from one level to the next, there is successively less total energy as you move up trophic levels. In general, we would expect that higher trophic levels would have less total biomass than those below, because less energy is available to them.

urgent please answer ​

Answers

The correct answer is DNA WITHOUT HISTONES.

Explanation:

Prokaryotes are unicellular organisms without membrane-bound organelles. They lack a true nucleus. Instead, they have nucleoid, a genetic material without the nuclear envelope. In prokaryotes, the genetic material is single circular double-stranded DNA without histones. Thus, the correct answer is 'DNA without histones.'

Answer:

the correct answer is 'DNA without histones.'

Explanation:

how many known enzymes are there in human body

Answers

Answer:

there are about approximately 1300 enzymes found in the Human body

In human body are 75.000 .

Skin cells are lost daily even without injury. The cell cycle responds by promoting
a. reproduction.
b. repair.
c. synthesis.
d. growth.

Answers

Answer:

The correct answer is A

Hope it helps! Please mark me Brainliest!

The cell cycle responds to the daily loss of skin cells skin promoting reproduction. Details about reproduction can be found below.

What is reproduction?

Reproduction in biology refers to the process of making copies or duplicate of a cell.

According to this question, skin cells are lost on a daily basis even without injury.

However, the cell cycle through the process of mitosis responds to this loss by making more copies of skin cell in a process of reproduction.

Learn more about reproduction at: https://brainly.com/question/7464705

#SPJ6

11. Choose the best answer.
A spore is a reproductive structure that contains a haploid cell and
a food supply
a style
a protective coating
a diploid cell

Answers

a protective coating. spores do not have stored food supplies, they are a haploid cell

Anthropologist have a keen interests in honey bees .why?

Answers

Answer:

But extrapolate to all the bees in a beehive and that singular moment is multiplied tens of thousands of times. ... The honey bee and flowering plants represent one of the most successful examples of mutualism in nature. Our food chain depends very heavily on the role of the bee as it pollinates.

What does the phosphorylation of Cdc25 by M-Cdk do? Question 4 options: It inactivates Cdc25, which promotes activation of more M-Cdk. It activates Cdc25, allowing the cell to exit mitosis. It activates Cdc25, which inactivates M-Cdk. It inactivates Cdc25, preventing further activation of M-Cdk. It activates Cdc25, which in turn activates more M-Cdk.

Answers

Answer:

It activates Cdc25, which in turn activates more M-Cdk

Explanation:

Cyclin are enzymes that regulate cell cycle progression by the activation of cyclin-dependent kinases (CDKs). These cyclins have no enzymatic activity on their own but they can activate Cdks by binding and phosphorylating them. CDKs can be activated by phosphorylation of activating sites and/or dephosphorylation of inactivation sites. Moreover, M-phase cyclins are cyclins that form M-CDK complexes in order to modulate the cell's entry into mitosis. Cdc25 is a phosphatase involved in the eukaryotic cell cycle which is well-known to regulate the entry into and progression during S (DNA Synthesis) phase and mitosis. In this regard, it has been shown that mitotic phosphorylation of Cdc25 by M-Cdks increases its intrinsic phosphatase activity, thereby Cdc25 is able to remove inhibitory phosphates from M-Cdk and, consequently, activate more M-Cdks.

Please help me with this on the picture

Answers

Fossil fuels produce no CO2 when burned

What is responsible for the red tide phenomenon? It is a phenomenon that usually coincides with storm surges; the name comes from the red kelp that often washes ashore as a result of rough weather. Red tide occurs in patches of water where certain species of dinoflagellates flourish. They are so abundant that the water becomes discolored and takes on a red hue. Red tides occur once a year and in accordance with the lunar cycle. The water appears red as a result of reduced levels of photosynthetic pigmen

Answers

Answer:

Red tide occurs in patches of water where certain species of dinoflagellates flourish.

Explanation:  

Red tides refer to the noticeable microalgae proliferation that can be recognized for being a big spot in the sea of a characteristic coloration. This phenomenon is caused by two microalgae groups: diatoms and dinoflagellates, both part of phytoplankton.

Red tides occur when certain environmental factors -such as temperature, light, nutrients availability, ph, etcetera- favor the overproduction of these organisms. These species produce toxins that turn to be dangerous for other animal species that feed on them.

Because these microorganisms produce pigments, their accumulation on the sea surface can be noticed as reddish, brown, or greenish color spots of variable extension.

Where are protons located?
A. Outside the nucleus of an atom
B. Inside the nucleus of an atom
C. Inside the nucleus of agell
D. In the cell membrane

Answers

Answer:

B

Explanation:

both the protons and neutrons are located in the nucleus.

I hope this helps

The presence of a negative allosteric effector on an allosteric protein would: a. cause a shift to the left in the sigmoidal curve. b. increase the number of R conformations. c. decrease the cooperativity of the substrate. d. raise the apparent value of the equilibrium constant, L. e. increase the likelihood of the binding of S.

Answers

Answer:

d. raise the apparent value of the equilibrium constant, L.

Explanation:

Allosteric regulation is a type of regulation of an enzyme by binding an effector molecule at a site other than the protein's active site (i.e., the allosteric site). The equilibrium constant (L) refers to the transition between two forms of an allosteric protein in absence of a ligand. The properties of allosteric enzymes are explained by conformational changes associated with a low-affinity tense (T) state, or a high-affinity relaxed (R) state. Negative allosteric effectors are molecules that bind to the allosteric site on an enzyme in order to decrease its activity, thereby leading the enzyme to a low activity T state and thus increasing the value of the equilibrium constant.

5. What are hyphae made of?

Answers

Answer:Hyphae are the feathery filaments that make up multicellular fungi. They release enzymes and absorb nutrients from a food source. Hyphae have a firm cell wall made of chitin.

Explanation:

Answer:

They are made of the feathery filaments that make up multicellular fungi

help is needed please!!

Answers

Answer:

| and ||

Explanation:

I haven't heard of heavy metal exposure causing nervous system damage, but I have heard that when you inhale during mining, you are inhaling all different particles and dust which causes other respiratory diseases, such as chronic obstructive pulmonary disease. Noise pollution is definitely true as people have lost their hearing from all the noise underground which also caused headaches. This is my opinion, sorry that I'm late!

What is the main cellular structure involved in respiration?

Answers

Answer:

The mitochondria is the main cellular structure involved in respiration

What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source?

Answers

Answer:

Plants developed roots to absorb water from the ground

Answer:

Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources.

Explanation:

If given the ability to hold on to water, the plant does not have to frow directly on a water source.

Why are coral reefs important to ocean life? Coral reefs take carbon dioxide out of the water and secrete it into their skeletons. Corals provide an important cleaning function by filtering debris from the water. Corals are an important link in the benthic food chain. Coral reefs provide food, shelter, and breeding grounds for thousands of marine organisms. Coral reefs grow upward to near sea level, providing shallow zones for benthic organisms.

Answers

Coral reefs are important becase they provide an important ecosystem for underwater life, they also not only protect the underwater world but also are safety as well it works as a buffer and it protects are coasts form waves , storms, and floods. Also the coral reefs themselves teem with diverse life thousands can be found in just one reef.

Where does DNA transcription take place?
A. In the nucleus
B. In the cytoplasm
C. In the lysosomes
D. In the ribosomes​

Answers

Answer:

A. In the nucleus

Transcription uses the DNA to make RNA molecules.

Why do water molecules "stick together"?

Answers

Answer:

Water molecules tend to stick together due to the structure and charge of the atoms present in the water. Hydrogen atoms are positively charged while oxygen atoms are negatively charged. ... All water molecules are exerting cohesive forces on all the molecules around them including those on the surface of a body of water

Because of the presence of hydrogen bonds

Necesitouna conclusion sobre la microbiologia y bacteriologia me ayudan pliss

Answers

Answer:

.

Explanation:

.uehwbgsbabwh hsbsbs

answer h and i urgently
no explanation needed ​

Answers

Answer:

h. I think option c growth of an organism in not true

C
I think its the best answers

A central idea of biology, protein synthesis, occurs in what order?

I. DNA leaves the nucleus
II. Ribosome translates the mRNA into a protein
III. proteins are transferred to the cisternae of the Endoplasmic Reticulum (ER)
IV. An mRNA copy of DNA is transcribed
A. IV, II, III
B. I, IV, II, III
C. I, III, II, IV
D. I, II, IV

Answers

Answer:

I think option (A) is right answer

Answer:

a

Explanation:

cual es la energía que se encuentra ligada a la estructura de la materia.

Answers

Answer:La energía eléctrica o electricidad es un fenómeno físico que se produce a raíz de las cargas eléctricas y de la interacción entre ellas. De esta forma, son los electrones y los protones las principales partículas subatómicas responsables de su aparición.

Explanation:

como se llama el primer cartílago de la tráquea

Answers

Answer:

cricoid cartilage

Explanation:

I think

One gene pair can influence other gene pairs, with their combined activities producing some effect on phenotype; this called ________________. In Labrador retrievers, one gene pair codes for the quantity of melanin produced while another codes for melanin deposition. Still another gene locus determines whether melanin will be produced at all--lack of any produces an albino (recessive).

Answers

Answer:

Epistasis

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants

In Genetics, a gene pair has the ability to influence other gene pairs based on their combined activities which produces some effect on phenotype; this is called epistasis.

Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of elephants. Take away the elephants and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grassland. Given this, elephants can be defined as what type of species in this community

Answers

Answer:

The elephants are the keystone species in this ecosystem.

Explanation:

The elephants' job is to knock down trees from time to time to get food from tall stock. This prevents the trees from overpopulating and allows shrub lands to stay in place. This is important as herbivores can continue to graze in large herds and carnivores can continue using the same hunting strategies with little to no push backs by trees.

This makes to elephants a keystone species as without them, the foundation species will decrease in population and create a whole different ecosystem with the trees as the new foundation species.

Which of the following processes involves breaking down 3-carbon molecules into 2-carbon molecules?

Glycolysis

Krebs Cycle

Transition Reaction

Electron Transfer Chain

Answers

Glycolysis breaks down 3-carbon molecules into 2-carbon molecules.

The compound 2,4-dinitrophenol (DNP) is a lipid soluble compound that has been used as a weight loss agent. It functions this way by causing the inner mitochondrial membrane to become leaky with respect to protons. Which result might be expected if cells treated with DNP were examined in detail

Answers

Answer:

ATP production would be slower in these cells than in untreated cells

Explanation:

Oxidative phosphorylation is the third stage of cellular respiration, which occurs in the mitochondria of animal and plant cells. Oxidative phosphorylation represents the most efficient pathway to generate energy in animal cells by the production of Adenosine triphosphate (ATP) as a consequence of the transfer of electrons from nicotinamide adenine dinucleotide (reduced form) (NADH) or flavin adenine dinucleotide (reduced form) (FADH2) to molecular oxygen (O2) through a sequential series of electron carriers. The 2,4-Dinitrophenol (DNP) poison is an uncoupler of oxidative phosphorylation that carries protons across the mitochondrial membrane, thereby leading to a rapid consumption of energy without the production of ATP.  This mitochondrial uncoupler (DNP) has been used as a dieting drug during the 30's decade (1930), but was rapidly banned due to its side effects, which include, among others, tachycardia, hyperthermia, tachypnea, and metabolic acidosis.

The prevalence of CRE infections in health care settings has increased significantly in recent years, in part because these organisms are able to share plasmid-encoded resistance genes. Which method of horizontal gene transfer is most likely responsible for transfer of the plasmid between bacteria

Answers

Answer:

Bacterial conjugation

Explanation:

Carbapenem-resistant Enterobacterales (CRE) are different types of bacteria that lead to infections in healthcare settings. Moreover, a plasmid is a small piece of DNA that can replicate independently from the bacterial chromosome. Bacterial conjugation is a type of horizontal gene transfer by which plasmids are transferred from one bacterium referred to as 'donor' into another called 'recipient' by sex pili. Plasmid transfer is unidirectional and depends on physical contact between bacterial cells. In this case, it is expected that this type of DNA transport mechanism occurs among patients occupying the same rooms in healthcare settings.

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